PIR wiring Help

["Mick Furlong" <hiltoneltd@xxxxxxx>]

I am trying to wire up a number of PIRs to a Linux box which has specific digital inputs similar to homevision.

 

All works fine for a single PIR however I want to wire several on a single input so that any of the pirs triggering will trigger the input and also I want to wire the Tamper contacts in a similar way on a seperate input.

 

For a single PIR I have.....

 

Input               PIR

In+     to           C

+12    to            +

GND  to             -

 

In- on the input is linked to GND on the input

+ on the PIR is linked is linked  N on the PIR

and finally there is a 10k resistor between - on the PIR and C on the PIR

 

This all works fine but can someone please explain how I add additional PIRs?

 

Cheers

Mick

 

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